US1843977A - Plow - Google Patents

Description

Feb. 9, 1932; P. HANsMANN ET AL 1,843,977

PLow- Original Filed Sept. 15, 1927 '7 Sheets-Sheet, l

"Feb 9, '1932. P. HANSMANN ETAL 1,843,977 I PLOW '7 Sheets-Sheet 2 Original Filed Set. 15. 192,7

n. aulHa/zmanan Feb- 9, 1932. P. HANsMANN-Er Al. 1,343,977

PLow Y original Filed sept. 15, 15u27 fr sheets-sheet Y s fe y" ,bauen/ions Pau l Hau sig/nn Hen/nan dc Feb. 9., 1932.

P. HANsMANN ET AL PLOW- 'Original Filed Sept. 15. 1927 7 Sheets-Sheet 4 PLOW rginal` Filed Sept; 15. 192'?A Sheets-Sheet 5 Feb. 9, 1932. P. HANsMANN ET AL 1,843,977`

rLow 0rgin a1 Filed Sept. 15. 1927 7 Sheets-Sheet 6 7 Sheets-Sheet -7 PLow Feb; 9, 1932.

s; y w/ w t p w umg/M i a H P Patented Feb. 9, 1932 UNITED .STATES PATENT 'o1-Fiori PAUL HANSMANN AND HERMAN STRAGE, F LONG PRAIRIE, MINNESOTA; SAID STRACK ASSIGNOR T0 SAID HANSMANN y PLOW Y sealed forbanaoned apncation mea september 15, 1927, serial No. 219,672. Divided and this appueation filed November 14, 1930. Serial No. 495,674. i

This invention relates to plows, and more particularly to plows wherein the plow beams are individually connected to a supporting frame for independent, vertical, and lateral swinging movement, and havingV means whereby the forward ends of the plow beams are rendered movable vertically to Vtilt the shares upon their heels.

This `invention has among its objects to provide means functioning during the lifting and lowering-of the plow to relieve the manually operated actuating means from the pulling strain transmitted from lthe horses or other draft element.

Among other objects is the providing of means utilizing' a lportion of the draft stresses so as to lessen the strain transmitted vtov the plow controlling mechanism, thereby facilitating the operation ofr that mechanism; to

'i provide means for independently and conveniently bringing about vertical adjustment of the plows; and to provide means for relatively regulating the supporting wheels with respect tothe plow frame to maintain the plows in 'a horizontal plane, with the wheels of the plow in vertically ofl'setpositions.`

@ther objects and advantages will be pointed out as this specification progresses, the vinvention consisting in the construction, combination7 and arrangement of parts hereinafter described and specifically claimed.

vWhile the features ofvinventi'on, as shown in the drawings herein, are embodied in ay gang plow, it is not the intention to limit the invention to such embodiment, as a one-unit plow may be constructed within the scope of our invention.

In the acompanying drawings:

Figure 1 is a plan view of a gangplow emr bodying the features of the present invention,

Y with the plows in operative position and the draft rigging indicated by dotted lines. j

Figure 2 is a view in elevationof the right hand side thereof, with the parts in the same positions as illustrated in Figure 1.

Figure 3 is a view in elevation of the left hand s ide thereof with the parts in the same positions' as illustrated in Figures 1 and 2 with some of the parts omitted'andsome broken away to show a rear wheel control and m adjustment and the left front wheelpost. Y

rFigure 4 is a view in elevation of the right hand side thereof with some ,parts omitted and some broken away to show the position i the plowsassume due to the pull of the draft element when the control lever latch is released and a segmental lever is brought into contact with a cross rbar of the frame.

Figure 5 is a View in elevation corresponding to that shown in Figure 4 with the plows further tilted dueto the pull on a plow supporting crank which has passed beyond dead Y center, and with the pull rod, which is connected with the segmental lever, loose and in a forward position in the slot of said Figure 9 is an enlarged detail view illustrating the adjustment between' the crank arms of the two plows.

Figure is a detail view of a rear ground element wheel. i

Figure 11 is an enlarged sectionall View through a crank vshaft on the line 11-11 of Figure 1 to show the supporting bearings with a toothed quadrant mounted loosely on the shaft and bolted to a frame bar and an operating lever hub and lever hub keyed to the shaft. 4 Figure 12 is a sectional View on line 12- 12 of Figure 13.v

Figure 13 is a sectional view on line 13-13 of Figure 12; and

A Figure 14 is a sectional view on line 14-14 of Figure 13; the last three views illustrating the means by which the plow beams are ad` justed horizontally. Y j

The subject matter of the present invention is that disclosed in our abandoned application Serial Number 219,672liled September 15, 1927, of which the present case is a substitute.

As shown in the drawings, a plow, or plows, are supported upon a wheeled frame A, frame comprising a front cross bar 2, a rearwardly extending side bar 3 joined at its forward end to the cross bar, and a diagonal brace member 4 connecting the cross bar 2 and the side bar 3, with the side bar 3 extending an appreciable distance rearwardly beyond the diagonal brace member 4. Supported, one upon each end of the front cross bar 2, are vertically disposed bearing members 5, `in which vertical posts 6 of a pair of supporting wheels 7 are slidably and pivotally mounted. As shown, the lower ends of the posts 6 are bent first rearwardly and then outwardly to form axle supports for wheels 7. rlfhe posts 6 are held in vertically adjusted positions in relation to the bearings 5 by the following described mechanism Secured upon the upper end of each of the posts 6 is a toothed quadrant and lever-supporting member 8, the quadrant 9 proj ecting rearwardly from the support member 8. A lever arm 10 has fulcrum support 11 upon each supporting member 8, each lever carry ing an ordinary manually controlled pawl mechanism 1.2 to cooperate with the toothed quadrant and hold the lever in adjusted positions. Eachlever 10 at its lower end has a. forwardly extending arm 13 connected by a rod 14' to the frame work. Thus, by turning either of the levers 10 rearwardly about its fulcrum 11, that side of the frame wil-l be raised upon the supporting` post while a reverse movement of said levers will lower the frame upon the supporting posts. The above described mechanism permits independent adj ust-ment of the sides of the frame, and thus the frame and plows may be kept in an even, horizontal position, as shown, with the wheels vin varying vertical positions.

ln order to steer the plow and control the wheels, a steering pole 15 is provided, supported as shown particularly in Figures 1 and 3, upon the vertical post 16, having suitable journal support on the frame. The wheels are controlled from the steering pole through two adjustable rods 17 connecting the arm 18, projecting` rearwardly from the steering post support, with the rear ends of arms 19 projecting rearwardly from the wheel posts 6. The rods 17, as shown, have pivotal `support in the rear ends of the arms 18 land 19, the front ends of the arms 19 being suitably lkeyed, or otherwise rigidly fastened, to the wheely posts 6. In order to permit of a swinging adjustment of the wheels 7, the rods 17 are each provided with an adjusting sleeve 20, so that by adjusting the lengths of the rods 17 by means of the sleeves 2O any desired swinging adjustment of the supporting wheels may be provided.

Nhere horses are employed for draft nower, eveners 21 are connected with the frame work by the following mechanism:

Supported in front of the front cross bar 2 of the frame and below said cross bar by journaled brackets 22 projecting downwardly and forwardly from the cross bar, is a rotatable draft bar 23. An arm 24 (see Figures 1, 6, 7, and 8) projecting upwardly and forwardly from the left hand end of the draft bar 23 has link connection 25 with an evener clevis ring 26. The right hand end of the draft bar is also connected with the clevis ring bymeans of a rod 27 connecting the clevis ring 26 with an arm 28 projecting upwardly and forwardly from the draft bar, the rod 27 being provided with an adjusting sleeve 29.

Having journal support upon the rear end of the bar 3 is a ground element wheel 30. As shown, particularly in Figure 10, a supporting post 31 of the ground element wheel is fulcrumed in a vertically disposed journal bearing 32, suitably supported upon the bar 3 and adjustable upon said bar through the medium Yof the adjusting screws 33. Secured upon the upper end of the post 31 is a laterally `(intending arm 34 connected in the following described manner, with the outer end of an arm 35, which arm 35 projects laterally from the rear end of the steering pole 15. A rod 36 connects the outer end of the .arm 35 with the lower end of a lever 37 having-central fulcrum sup port 38 upon the frame bar 3. The upper end of the lever 37 is pivotally connected by a rod 39 with the outer end of the arm 34 secured to the ground element wheel supporting post 31. An adjusting sleeve 40 is provided for the` rod 39, to permit adjustment of the ground element wheel 30. Adjustable connections between the rods 36 and 39 and the lever 37 may be secured by providing the lever 37 with a plurality ofopenings 41. By mounting the ends of the rods 36 and 39, respectively, in openings^41at different distances from the fulcrum of the lever 37, the relative movement between the arm 35 and the arm 34 can be adjusted.

To support and control the plows B and C the yfollowing mechanism i s provid-ed Journaled in bearings supported by the side bar 3 of the frame and the diagonalbrace bar 4 in rear of the front cross bar 2 of the frame is a crank shaft 42, the free end 43 of said shaft being bent forwardly and then outwardly and forming a support at its outer end for the beam 50 of the plow B. Similarly ournaled in bearings supported by the side bar 3 of the frame and the diagonal brace bar 4 in rear of the shaft 42 is a crank shaft 44, which shaft at its free end is bent forwardly and outwardly anl forms a bearing support at its outer end for the beam 50 of the plow C. These two plows, as shown, are

in parallel arrangement, the plow C being `Ysuitable set screw 47.

`with the pivot adapted for vertical swinging upon theA 1 ly in the following manner Mounted rotatably on the lend of each crank shaft is pivot block 45', which block is held positioned upon the shaft by a collar 46, the collar being secured to the shaft by a The supporting, twopart bracket members 48 and 49 of the plow beam 50 have vertical pivotal connection 5l lock 45. rlhe plow is thus crank shaft and for horizontal swinging upon tn'epivot 51. To provide for adjustment of the plow with respectrto its support upon Vthe crank shaft, thebracket member 49 is formed with an opposed pair of arcuate slots 52, see Figure 14, through which are inserted bolts 53 connecting thebracket members 48 and 49. rlhe bracket member48 is formed with a central boss, or projection, 54, projecting into a corresponding central opening 55 in the bracket member 49 to prevent lateral displacement of these members. As will, therefore, be evident, the position Yof each plow may be laterally adjusted by means of the pivot block 45 upon the crank shaft; and by means of the slotted pivotal-connection between the bracket members 48 and 49, the plow may be rotatably adjusted about its longitudinal axis. 1

rlhe plows are actuated incarrying them into and out of the ground through the following described mechanism and connections: Y

Upwardly extending arms 58l and 59 are lixedly connected to the crank shafts 42 and 44, respectively. Rods 56 and 57 are pivoted in the upper ends of said arms andare adjustably connected by a turnbucklle 60. rllhe rotation of the crank shaft 42 vthus causes, by means of this connection, a similar rotation of the crank shaft 44. To permit manual rotation of the shaft42 and by means of the above mechanism, the shaft 44 simul-V taneously tnerewith, therev is provided a lever 61 keyed to the crank shaft 42 and carrying a manually controlled locking pawl 62 to cooperate with the teeth of a quadrant 63 supported by the frame-work to hold the lever 61 in an adjusted position. Projecting downwardly from the lower end of the lever 61 is an arm 64 connected at its lower end, by a link 65, with a lever arm- 66 fixedly mounted upon the draft bar 23. As shown, particularly in Figures 6 and 7, the arm 66 at its upper end is formed with a curved slot, into which the forwardend of the link 65 projects, this arm 66 being formed with a lower rearwardly projecting portion 6'? which, at a certain point in the operation, as illustrated in Figure 7, contacts with the cross bar 2 to limit the rotation of the arm 66 and with it the draw bar 23. The lever arm 66 is longer than the leveriarms 24 and 28which are connected, by means of the links 25 and 27 which' may b-e considered as constituting a draft element of the mechanism, to the source of motive power which may here be considered as being connected to the eveners 21, although a tractor or other source of motive power may be readily employed, if desired. Y

Figures 1 to 3 illustrate the plows in normal, operating positions. In this position lof the plows, the/lever 61 is in a forward position with reference to the cooperating quadrant 63, locking the draw bar 23 and lever 65 in rearward position, as shown in Figure 6. In this position the plow supporting cranks 43 and 44,-will be in a lowered position, lowering the forward ends of the plow beams connected thereto and thereby lowering the plow points to cause them to enter the ground to aplowing position, such as is illustrated in Figures 1 to 3, inclusive. lVhen the plows are in this position vand the mechanism is being 'drawn forward by a suitable source of motive power, the resistance of the earth to the passage of the plows places a powerful rearward stress on the plow beams, which tends to rotate the cranks 43 and 44 rearwardly and downwardly. The forward pull on the arm 64 by the link 65 connected to the arm 66,.however, tends to partially counterbalance this rearward pull of the plow beams, and facilitates manually raising the beamsfby means-of the lever 61 and associated parts, when desired. Of course, when the lever 61 is locked in' its forward position, as illustrated in Figures 1 to 3 and 6, the forward pull on the lower projection 64 of the lever 61 is prevented from rotating the lever 61 by the rearward pull on the plow-beams,4 and, furthermore, by the engagement of the pawl 62 with the toothedI` quadrant 63 so' that this pulling force which assistsin raising the plows during the actual raisingv thereof, is transmittedrto the frame during a plowing operation.

vWhen it is desired to lift the points of the plows to carry them out o-f the ground, as illustrated, particularly in Figures 4, v5, 7, and 8, the 'lever arm 61 is swung backward. During the initial portion of this backward swing, the pull from the draft element is transmitted to the arms 24 and 28 tending to rotate the draft bar 23 clockwise, as illus-I trated in Figures 6 to 8. rlhis also tends to rotate the arm 66clockwise and to draw the link 65 forwardly, thus assisting in Jthe rearward movement of the lever 61 by the operator. As the lever 61 is pulled back, it will be evident, as illustrated in Figure 7, that the lower projecting end of the lever arm will be swung forward, permitting continued pull from the draft element to turn 'the portion 67 of the lever 66 into engagement with the iront cross bar of the frame, as shown in Figure 7. By the time 'the projection 57 engages the cross bar 2 of the frame, the crank shafts 43 and ist will have passed dead center and thereafter the pull of the plow beams will assist in further raising the plows from the ground so as to make unnecessary any further action of the lever the link for this purpose. TWhile the projection GT of the lever 66 is in contact witl cross bar 2, as shown in Figure 7, all of t ie pulling strain transmitted through the draft element is transmitted to' 'the plow frame and none is transmitted to the link connection G5. llVitl the stop lug in the position shown in Figure "l", the continued rearward swing of the lever 6l and continued lifting of the points of the plows will be permitted by the slotted connection between the link 65 and the lever` 66. This is of great advantage both in the lifting and lowering of the. plow. AThe above relieves the strain upon the operator, as the operator is not, during the initial movement of the lever arm in the raising operation, or in the nal movement of the lowering operation, handling the lever against the pull the draft means. By varying the relative lengths of the levers 2% and 28 and the lever 66 any desired portion of the pull of the draft element may be transmitted to the lever 6l to assist in raising the plows.

By reason of the above described features of invention, it is possible to readily perform the operation of l wering and raising the plows without stopping the plow or without undue strain on the operator.

The principal function of the ground element wheel during a. plowing operation is to create a lateral force which is opposed to the side draft of the plows. This side draft is a lateral force and is a well known characteristic of mould board type plows and is produced by the pressure of the earth against the mould board as the mould board raises and turns the earth during a plowing operation. The ground element wheel may be positioned 'to ride against the land side of a furrow and in this manner resist the lateral force of the side draft, although other t *pes of ground. elements to resist side draft are well known to the art, and, inasmuch as the ground element wheel itself does not constitute one of the features of the present invention, it is not desired to limit the invention to embodiment with any particular type of ground element wheel for this purpose.

Among other important advantages of the construction described and shown are the means for leveling the frame. By means of the slidable supports of the wheels and the actuating levers therefor either side of the frame may be quickly adjusted vertically with reference to the wheel for that side so that one wheel may travel upon a higher level than the other, as illustrated in Figure 2, with the plows remaining level.

By means of the adjustable connections between the wheel posts and steering pole, the apparatus is conveniently steered from the pole and adjustments may be easily made in the wheel alinement. By means of the adjustable connection between the crank shafts of the two plows, the relative depth of travel of the plows may be easily regulated, and, by means of the supporting connections above described for the plow beams upon the crank shafts, the plow beams may be easily adjusted laterally upon the crank shafts, and by means of the adjustable support for the plow bea-ms, particularly shown in Figure 14, the plow may be adj ustably rotated about its longitudinal axis with reference to its support to hold it in proper plowing position. By means of the adjustable connection between the steering pole and the ground element wheel 30 the traveling position of the ground element wheel may be regulated.

he described features of invention are of particular importance in a plow of this character, wherein the plows are supported to swing freely laterally and vertically during the plowing operation at one side of the center of draft and the side draft counter-balanced as by means of a ground element wheel supported at the rear of the plow.

V/hile the construction is herein illustrated and described as horse-drawn, other draft means may be employed within the scope of the invention.

liffith respect to the connection of the draft means with both the frame and the plow and the means for operatively disconnecting the draft means from the plow at a certain point in the lifting operation of the plow, it will be evident that up to the time that the plow is being lifted the draft means is through its connections pulling upon the plow and lifting lever of the plow in a manner to assist in starting the lifting operation; whereas, after the projection from the lever 66 comes in contact with the frame cross bar. there is no further pull upon the-plow operating lever by the draft means. As pointed out, this relieves the strain upon the operator handling the lifting lever, both in the initial lifting of the plow and in the lin al lowering of the plow.

We claim:

l. A plow mechanism, comprising in combination, a wheeled frame, plow support means pivotally mounted thereon, a plow, a beam connected to said plow and having journaled connection with said plow support means, a draft element, means operatively connecting said draft element to said frame and to said plow support means to exert an upward force on said plow support means.

2. A plow mechanism, comprising in combination with a wheeled frame, a plow, a crank shaft, a plow beam connected to said plow Vand journaled on said crank shaft, a draft element, and means operatively connecting said draft element to said frame and to said crank shaft to tend to raisesaid plow beam during a Vplowing operation.

3. plow mechanism, comprising in combination, a frame, pair of forward support wheels therefor, a plow,a crank shaft pivotally mounted in said frame, and having vertical and lateral pivotal connection to said plow, manually operated means operatively associated with said crank shaft to secure said crank shaft in an adjusted position, a ground engaging element adjustably mounted rearwardly on said frame, steering means adjustably connected to said forward support wheels and to said ground element wheel, a draft element, and offset lever means connected to saidl draft element and to said crank shaft tending to raise said plow during a plowing operation.

Ll. A plow. mechanism comprising a frame, support wheels mounted thereon, steering means connected to said wheels, a vertically movable plow support member, a plow, a beam connected to said plow and havingl vertical and lateral pivotal connection to said plow support member, a draft element, and means connecting said plow support member to said draft element to exert a lifting force on said plow supportl member Vduring a'plowing operation.

5. In a gang plow, a frame, support wheels mounted thereon, a plurality7 of plow supporting crank shafts journaled on said frame, a plow mounted for verticaland lateral pivotal movement on each of said crank shafts, a ground element wheel supported by said frame in compensating relationship with said plows, means inter-connecting said crank shafts to move said crank shafts in unison, manually actuated means to rotate said crank shafts to vertically move the front ends of said plows, a draft element, means operal tively connecting said draft element and said crank shafts to exert a lifting force on said crank shafts during a plowing operatiom'and means operative during a lifting operation to operatively disconnect said draft element from said crank shaft. j f

6. In a gang plow, a frame, a plurality of supporting wheels mounted forwardly thereon, a plurality of verticallymovable shafts mounted in said frame, a plow connected to each of said shafts 'to have vertical and hori-V plows and positioned to exert a lateral force Zontal pivotal connection therewith, a ground element wheel mounted rearwardly of said plows and positioned to engage the ground during a plowing operation to oppose side drafts ofv said plows, manually actuated means connected to vertically move said plow support shafts, a draft element connected to said frame, means interconnecting said draft element and said manually actuated shaft operating means, and means actuatable during a lifting operation of the plow support shafts to operativelyy disconnectv said. draft `element from said-shaft operatingineanslV ,7, In a-gang' plow, a wheeled frame, al plurality of plows, mountedfor vertical-landv horizontal pivotal movement on said frame, a side draft compensating groundelement carried y `by said, frame, kmanually actuated :means mounted to control vertical movement of the forward ends of said plows, a4 draft element Y connected to said frame and to said-manually actuated plow control'means, and means operative' during'a lifting of the forward ends of said plows to operatively disconnect said draft element means. f .,-v Y y j 8.-` In agang plow, a frame support, wheels connected thereto,AV a pluralityof vertically adjustable plow support means mounted on said frame, a plurality of plows having independent, vertical, and horizontal pivotal confnection `withsaid plow support means, a Ldraft element connectedto said frame, means operatively connecting "said plow support means in a lowerfadjusted position to said draft element to eXertan upward force thereelement, a supporting lever for said draftV element pivotally mounted on said frame, 'and lever means operatively connected to said draft element support lever and to said crank shafts to exert an upwardly rotating force thereonduring a plowing operation.

lOLTIn a gang plow, a wheeled frame, a

from said plow control wo Y Vdraft element mountedon said frame, a plurality of vertically movable plow support members mounted on said frame, a plow having vertical and lateral pivotal connection with each ofsaid plowy support members,`said plows being mounted, on one side of the line of draft from said draft element, a ground elementl wheel supported rearwardly of said on said frame contrary to the sidev draft of said plows, manually actuated means connected to said plow support members to vertically adjust said members, and means coni necting said draft element and said plow support' members to exert an upward force on said plow support members.

ll. In a gang plow, a wheeled frame, a draft element mounted on said frame, a plurality of vertically movable plow supportmembers mounted on said frame, a plow oonnected to each of said plow support members to llave vertical and lateral pivotal Connection therewith, said plows being mounted on one side of the line of draft from said draft element, a ground element wheel supported rearwardly of said plows and positioned to exert alateral force on said frame contrary to the side draft of' said plows, manually actuated means connected to said plow support members to vertically adjust said members, means Connecting said draft element and said plow support members to exert an upward force on said plow support members.

l2. In a gang plow, a frame, a plurality of support wheels, an axle supporting each wheel and connected to said frame to be free for independent vertical movement with respect to said frame manually controlledv adjusting means connected to said frame and to each of said axles to adjust thel relative ve-rtical position of said frame with respect to each of said wheels, a plurality of plows mounted on said frame, plowV lifting lever means mounted to vertically move the front portions of said plows, a draft element eonneeted to said frame, and means Connecting said plow lifting lever means and said draft element to exert a lifting force on the front ends of said plows.

In testimony whereof we affix our signatures.

PAUL l HANSMANN. HERMAN STRACK.

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